Spinning-spindle.



G. H. CHAPMAN.

SPINNING SPINDLE,

APPLICATION FILED DEC. 13, 1910.

Patented Sept. 9, 1913.

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UNITED STATES PATENT OFFICE.

CHARLES H. CHAPMAN, or wincnnsrnn, MASSACHUSETTS. Assmnon r0 ennr mn GRAVITY srmnm COMPANY, or wmonnsrnn, MASSACHUSETTS, A CORPORATION OF MAINE.

SPINNINQSPI-NDIE.

Specification of Letters Patent.

To all whom it may concern! 1*.

Be it known that I, Cit/nines H. CRAP MAN. a citizen of the United States, residing at Winchester, in the county of Middlesex and tate of Massachusetts, have invented a certain new and useful Improvement in Spinning-Spindles, of which the following is a full, clear, and exact description.

The present invention is in the nature of an improvement upon the invention for which I received Letters Patent of the United States of America,- No. 841,485, dated January 15,- 1907. As in the invention of the patent, so here, the spindle is supported in a bolster which is provided with ball bearings at its bottom and top and r the ball bearingsaflord the active hearings in which the spindle turns. Differing from the invention of the patent, the sleeve is composed of two cylindrical norbfiexible portions, of different diameters, connectedby a tapered spirally-slotted flexible portion', the lower and smaller cylindrical portion notched across its bottom to receive and firmly hold a locking clip. An additional difference is that the bolster is, provided at its lower end with lips forming a V-shaped bottom, to automatically bring the transverse notches in 'the bottom of the bolster into line withthe locking clip in the lower end of the sleeve. These and other features, as hereinafter particularly pointed out and claimed, constitute the invention.

In the accompanying drawings, illustrating the invention, in the several figures of which like parts are similarly designated, Figure 1 is a longitudinal section with the spindle and bobbin broken out. Fig. 2 is a partial top plan view of the spindle and base with the upper portion of the spindle cut away just above the top of the whirl base. Fig. 3 is a top plan View of the bo1- ster. F ig. 4 is an elevation of the b lster. Fig. 5 is a bottom plan view of the bolster. Fig. 6 is an elevation of the bolster turned a quarter Way around from Fig. 4:. Fig. 7 is a bottom plan view of the bolster and sleeve. Fig. 8 is an elevation of the sleeve with the lower cylindrical portion partly in section to show the position and form of the locking clip. Fig. 9 is a bottom plan view of the sleeve.

The bobbin 1 may be of any usual or ap proved form. The spindle 2 has acylindrical portion 3 to engage the top of the bobdirt or sediment.

bin, andbelow this portion the spindle is of line 4, and thence it is of a rapidly decreasing diameter tothe full linefi below which it is made as a. sharp inverted cone 6. Fixed to the spindle above the line 45, is a cone 7,- receiving bearing balls 8. The bolster 9 has a euplO which encirclesthe Spindle and cone. and is supported upon the shoulder 11 within the enlarged upper cylindrical end 12 of the bolster. The cone, balls, cup, and the upper portion of the bolster-constitute a Patented Sept..9.'1913.

increasing diameter to the full transverse bolster ball-bearing for the spindle. Below the cone 7, the bolster has a cylindrical, portion 13, and below this cylindrical portion the bolster has a tapered portion 14, and below the tapered portion is a cylindrical portion 15: This cylindrical portion 15' is screw-threaded internally, as seen in F igs. 1 and 6, and the step 16 is screwed therein and thus rendered adjustable within the bolster 9. The step has a. vertical perforation 17 which permits of the escape of any The conical end 6 of the spindle, the step 16 and the balls 18, the collar 19, and the lower portion 15 of the 1001- ster constitute a ball-bearing step for the spindle, and by virtue of the fact that the bolster has at its, top also the described ballbearing, it is herein referred to as a ball bearing bolster. The cone 6,- balls 18, step 16, cup 10, cone 7, and balls 8 are all of hardened steel, and with the light loadrequiredwith perfect lubrication are practically indestructible.

The upper portion of the bolster 9, ad-

jacent to the cone '7, and between its cylin drical parts 12 and 13, is flared, as sho'wn herein and in the patent referred to, to con: form to the said cone, and throughits length the bolster is larger than and consequently out of contact with the spindle. The bolster is supported within a tubular upright portion 20 of the base 21 by means of aslceve 22, the upper portion of which is cylindrical, next below which is the tapered flexible portion 24, and terminally a cylindrical portion 25 and fitting the bolster with an easy slip fit at top and bottom and loosely between. tapered to a smaller diameter to the pointwhere it joins the cylindrical portion 25, and is spirally slotted to form a flexible con nection betweenthe cylindrical portions 23 and 25. The sleeve 22 is rigidly held by 11 0 The portion 24 cf the sleeve is 106 its upper cylindrical portion 23 within the upright 20, with its flexible portion 24 and cylindrical portion 2-5 suspended and out of cont-act with the walls of the oil-well 26 in the base 21, so that the sleeve admits of suflicient longitudinal and lateral movement to accommodate the unbalanced load incident to imperfect bobbins or splndles. The unright 20, base 21, and well 26 constitute the bolster-case. The outside of this bolstercase is screw threaded to receive a nut 27, as shown in Fig. 1, for securing it to the bolster rail (not shown).

The step 16, as shown in Fig. 7, has a number of notches 28 cut transversely across its bottom, and the bolster 9 also has opposite transverse notches 29 cut in it. The sleeve 22 has applied to it a locking clip 30 adapted to engage one of the notches in the step when allned with the notch in the bolster 9 to prevent the adjustment of the step from changing and also these parts from turning under the rotation of the spindle. By making a number of thesenotches in the step a very nice adjustment of the bearing with relation to the spindle may be secured.

The base 21 is provided with an oilreservoir 31 having a feed tube 32 covered with a tilting cover 33 which is pivoted to the upwardly extending ears 34 by the pin 35. The tilting cover is provided with the overhanging projection 36 which cooperates with the flange 37 of the whirl-base 38 and limits the upward movement of the spindle and bolster. The cover 33 has its top or upper side eccentric in relation to its lower side, as shown in Fig. 2, thereby presenting an upwardly and outwardly tapered edge 39 on the sides and outer edge and a straight orperpendicular edge on the inside next to the upri ht which sustains the cars 34. By this construction the cover can be easily forced up and out of the way by the snout of the oil can used from either side or the outer edge. thereby greatly facilitating the work of oiling. The ears 34 may be formed l:

cutting a slot through the upright portion extending from the side of the feed-tube and this slot preferably is cut on an angle, as shown, whichlimits the movement of the cover by contact of the projection 36 with the bottom 40 of the slot, as indicated by the dotted lines in Fig. 1.

When it .is desired to remove the spindle from the base, the cover 33 is raised to the position shown by the dotted lines, and then the spindle and bolster may be readily removed from the base. The spindle. and bolster may be replaced in the base at any time, since the flange 37 of the whirl-base will tilt the cover by its downward contact with the projection 36 of said cover.

The sleeve 22, as shown in Fig. 8, has an oil hole 41 in its upper cylindrical portion 23, to admit oil from the oil reservoir 31 to the oIl-well 26 and its enclosed parts.

The locking clip 30 is made of a flat piece of metal, with its upper portion of the width to just fill the bore of the cylindrical portion 25 of the sleeve 22. The lower portion of the locking clip is made of a width equal to the outside diameter of the cylindrical portion 25 and fits opposite notches 42 in the bottom of the sleeve snugly. The notches extend a little below the locking clip and their corners are riveted down upon and firmly hold the locking clip in place, as shown in Fig. 9. This construction far superior to the method of applying the locking clip in the patent, inasmuch as in the patent the clip is soldered or brazed ,on to the lower end of the sleeve, which-presents very li'ttle surface contact, and no means of'determining to a certainty whether Gnnot the locking clip is firmly attached to the sleeve; while with the present means of applying the locking clip in the notches 42 cut in the lower end of the sleeve and riveting down the corners of the notches upon the lockingclip as described. insures a firm and positive connection of the locking clip with the sleeve.

The bolster 9 has an oil hole 43. The bolster differs from the bolster'in the patent inasmuch as the present bolster is provided with ,lips 44, which extend below the notch cut across its bottom, forming a V-shaped bottom of the bolster, so that when the bolster is placed in the supporting sleeve and drops down into place, the lips 44 when they strike the locking clip will, if the notch is not in line with the locking clip, cause the bolster to adjust itself with its notch in perfect alinement with the locking clip, thereby requiring no effort or attention on. the part of the operative to aline the notch in the bolster with the locking clip. This construction is far superior in practice to the flat bottom of the bolster in the patent, be cause the flat bottom of the bolster of the patent requires that the operative aline the notch of the bolster with the locking clip in order to enable the locking clip to enter the notch in the bolster, and inasmuch as the bolster turns on the ball bearings so easily and the operative has no means after the bolster enters the sleeve of ascertaining whether the bolster is in alinement, it requires in many cases repeated efforts to get the locking clip to enter the notch in the bolster. This delay irritates the operative, who is very liable to attempt to force the bolster down into place, which is liable to do damage; while with the present construction, the lips on the bottom of the bolster will, it the notch is out of alinement with the locking clip, cause the bolster to turn around on the spindle into perfect alinement of its notch with the locking clip, and no attention of the operative is required, thereby removing any liability of the bolster being forced down upon and injuring the locking clip. Another feature. in the constructionof the present bolster which differs'from the bolster of the patent, is the cylindrical portion 13, which entersthe upper end of. the sleeve 22 with an easy slip fit, so that the bolster is held in a position with the plane of the band pulljat or near the longitudinal center. of its cylindrical portion, as will be seen by reference to Fig. 1. By this construction of the bolster,the lateral pull of the band has no tendency to deflect the spindle out of a perpendicular line, no matter how tight the band may be applied, t-heband pull tending at all. times with this construction, to hold the spindle in a perpendicular position. The.

ster in the sleeve 22 can be made quite loose,

. ,since the tension of the band will at all times hold the bolster against .the sleeve -.in line with the band pull, and this fit should'always he made with sufficient looseness' to allow the lower end of the spindle and bolster to take on .the gyration required to carry a limited unbalanced load on. the spindle.

The Whirl-base38 is applied to the spindle in any usual or approved way, and is provided with a circular tapering groove 45m receive the lower end of the bobbin, the latter having no connection with the spindle save at its upper end as already described.- The interior of the whirl-base is counterbored or otherwise recessed, as shown at 46,

to receive the bolster ball-bearing'and the sleeve-whirl 47.

In practice it has been found desirable to allow the spindle alittle upward movementto allow the flange on the whirl-base to strike a slight blow against the projection 36, and this slight blow readily loosens the bobbin from the spindle without requiring it to be pulled off by force, and hence avoids the liability of springing the spindle out of true.

The whirl is smaller in diameter at the point of the band pull than the bolster ballbearing, and by this construction a contracted cylindrical sleeve-whirl is produced, whereby it is possible to make a bolster ballbearing of a larger size and at the same time retain a whirl of regular or standard diameter, and, hence, the spindle of the pres entinvention may be applied to spinning frames without alterations of the size or speed of the driving-drum.

The parts of the invention are preferably assembled as follows: The collar 19 is fastened in any suitable way on to the end of the spindle above its cone 6, and the hardened steel cone 7 is forced down upon the spindle into place. The bearing balls 8 are arranged in the bolster-cup 10, and the bolthe cylindrical portion 13'of the boland its clip interlocks ster 9 is applied to the spindle, cone, and

the relation of the upper end of the bolster 9 and the inserted bolster-cup, the said-upper end has'the cylindrical portion 12 terminatingin the shoulder 11; l/Vhen the bolstercup, balls, cone,and bolster are assembled, as previously described, this shoulder serves to aline these arts in order to form a proper ball bearing. While the step 16 and its balls are being adjusted, the collar 19 prevents the balls in .the step from dropping out of place; The step 16 is adjusted until the spindle fits without lateral or vertical. movement inits bearings. The interlocking of the clip 30. with the notches in? the step and bolster, as already indicated, enables mete obtain and securely hold a very nice adjustmentof the spindle in its bearings; The

whirl-base can next be forced upon the spindle, although it is better practice td force the base upon the-spindle before assembling the step bearing; but since the bolster ball bearing is of greater diameter than the smallest diameter of the whirl, of course the whirl must be bolster bearing is assembled; The sleeve 22 is then placed in position in the bolster-case with. the lower end of the bolster and step; i

When an unbalanced load is placed upon the spindle, or when a spindle is slightly imperfect, the greater part of the load being above the center of the band pull, predominates over the lower and short end of the spindle and the lower end of the bolster and spring sleeve take on the gyration of the spindle and the upper end of the spindle and bobbin run quite steadily. Another importantfeature in carrying an unbalanced load is to keep a perfect adjustment of the lower end of the spindle in the step bearing, and this my invention entirely effects, inasmuch as the tension caused by the band pull acts to force the step bearing into perfect adjustment on account of the contact with the balls 8 of the downward and outward tape-r of the bolster cone 7. This downward pressure of the step in its bearing can be varied by the taper of the cone 7 and the position of the plane of the band pull. If the whirl were at the center of the distance between the step bearing and the bolster bearing, the

angle of the step and cone being the same,

there would be no downward pressure excepting that caused by the weight of the spindle and whirl. When the whirl is placed up near the bolster hearing, as herein shown, the pressure caused by the band pull is much greater on the bolster cone than upon the step cone, which causes a downward pressure of the step hearing. The tendency of the band poll is tocause the cone to put a downward pressure sufiiplaced in position after the cient to adjust the spindle in the step-bearing When the adjustment of the bolster and step bearing are quite loose.

Another important feature in my invention is that the lubrication is perfect. Through the reservoir the lower part of the base and bolster are filled with oil, which is carried up on the spindle by the centrifugal force on account of the upwardly increasing diameter of said spindle and is spun out and thrown off of the bolster cone directly on to the bolster balls 8, keeping them constantly lubricated.- This movement of the oil is facilitated by the upwardly flaring construction of the cone.

The spindle, whirl, cone, and collar are supported and revolved in the bolster hearing and step bearing, having no other support or contact.

.I wish it to be distinctly understood that I do not limit my invention to the specific construction of the several parts herein shown and described, since the details of construction. may be modified without depatring from the spirit of my invention, and, moreover, the invention is applicable to a bolster and step bearing of the journal type.

What I claim is v 1. A spindle, a bolster having a ball hearing at its top and a ball bearing adjustable step at its bottom to receive said spindle, said bolster having a beveled bottom provided with notches, and a locking clip automatically engaged by said notches, whereby the adjustment of the step is prevented from changing and the bolster from rotating with the spindle.

2. A spindle, a bolster therefor having a transversely notched bottom, a' bolster-supporting sleeve having its bottom transversely notched, and a locking clip fixedly secured in the transverse notches in the bottom of the sleeve and adapted to be found and'engaged by the notched bolster.

3. A spindle, a bolster having a ball bearing at its t0p',a ball bearing step at its bottom, and a beveled and transversely notched bottom, a bolster-case, a sleeve supported in said bolster-case and itself supporting the bolster, and a locking clip fixed in the bottom of the sleeve adapted to be engaged automatically by the notched and beveled 'bot tom of the bolster.

4. A spindle, a bolster therefor having a notched V shaped bottom, a supporting sleeve for said bolster, and a locking clip fixed in the bottom of said sleeve and adapted to be automatically found and engaged by the bottom of the bolster.

5. A spindle, a bolster therefor having opposite notches in its bottom and having said bottom constructed With V-shaped' portions located betweenthe notches with their inclined sides converging toward the notches, a bolster-supporting sleeve having its bottom transversely notched, and a locking clip fixedly secured in the transverse notches in the bottom of the sleeve and adapted to be found and engaged by the V-shaped and notched bottom of the bolster.

6. A spindle, a bolster having at its top and bottom bearings for said spindle, a contracted cylindrical sleeve Whirl inclosing the upper portion of the bolster, and a bolster locking clip, said bolster having a V-shaped and notched bottom to facilitate the alinement of the notches on the bolstcrs bottom with the locking clip.

In testimony whereof I have hereunto set my hand this 12th day of December A. D. 1910.

CHARLES H. CHAPMAN.

\Vitnesses OSCAR E. Srsvrxs, FRED H. CHAPMAN. 

